This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
n | a(n) |
---|---|
2 | 1 |
3 | 5 |
4 | 20 |
5 | 74 |
6 | 264 |
7 | 924 |
8 | 3200 |
9 | 11016 |
10 | 37792 |
11 | 129392 |
12 | 442496 |
13 | 1512224 |
14 | 5165952 |
15 | 17643456 |
16 | 60250112 |
17 | 205729920 |
18 | 702452224 |
19 | 2398414592 |
20 | 8188884992 |
21 | 27958972928 |
22 | 95458646016 |
23 | 325917686784 |
24 | 1112755552256 |
25 | 3799191029760 |
26 | 12971261403136 |
27 | 44286680330240 |